As a rule of thumb, you should always clean the septic tank filter when doing your routine pumping. It is best to use a filter that has an alarm.
How to Care For Your Septic System in Florida
What Are Leach Lines and When Should They Be Replaced?
Septic Tank Maintenance: 7 Benefits of Regular Cleaning and Servicing
6 Things We Bet You Never Knew About Your Septic System
How to properly wash your septic tank filter
How to Clean a Septic Tank (with Pictures) - wikiHow
Maintaining Your Septic System
Septic Systems and Their Maintenance
What Is a Septic Effluent Filter and Is It Necessary? – Fresh
Septic Systems PWM Environmental in TN 615-431-3663
Septic System Design and Installation Information